CN2351231Y

CN2351231Y - Thread rolling head

Info

Publication number: CN2351231Y
Application number: CN 98241630
Authority: CN
Inventors: 孟凡宗
Original assignee: Beixin Construction Tech Inst Beijing City
Current assignee: Beixin Construction Tech Inst Beijing City
Priority date: 1998-10-20
Filing date: 1998-10-20
Publication date: 1999-12-01
Anticipated expiration: 2008-10-20

Abstract

The utility model relates to a thread rolling head for extruding screw threads, mainly composed of a rolling wheel, a front end cap, a rear end cover, a rolling wheel pin, a rolling wheel shaft, a rolling wheel frame, a knife frame, etc. the cylindrical knife frame is positioned between the front end cap and the rear end cover, and the cylindrical knife frame is tightly connected with the front end cap and the rear end cover. The rolling wheel is connected with the rolling wheel frame through the rolling wheel shaft together. Three rolling wheel frames form the angle with 120 DEG mutually. The three rolling wheel frames are connected with the knife frame through the rolling wheel pin. the rolling wheel frame can wind the rolling wheel pin to rotate. The periphery of the rolling wheel is a rolling knife. The rear end cover is connected with the outer dynamic force. The utility model is mainly used for extruding reinforced bar into outer screw threads under the hypothesis that the reinforced bar is not treated for any prior period.

Description

Thread rolling head

The described Thread rolling head of the utility model is mainly used in end reinforced rigid rolled thread, belongs to no cutting metal mechanism processing class in operation, the Department of Transportation.

In building field, especially in the concrete casting process, it is one of very important operation that reinforcing bar connects.Reinforcing bar connects main strapping or the welding of adopting at present, though these two kinds of methods are also being used by wide model at present, but since at the scene the operation in time-consuming, the effort and other deficiency, can not satisfy the requirement of the big construction volume of modernization gradually, a kind of new connecting method for reinforcing bars appears in the recent period, be exactly in advance with the end reinforced screw-like that is processed into, with tapped sleeve two reinforcing bars coupled together at the construction field (site).This method of attachment, time saving and energy saving in the operation at the scene, accelerate speed of application, so be subjected to the favorable comment of unit in charge of construction.But also there is weak point in the intensity of processing of the screw thread of reinforcing bar and connecting portion, when being the reinforcing bar machining screw,, so need reinforcing bar is cut into cylindrical before the machining screw because the reinforcing bar periphery is a non-cylindrical, the reinforced steel bar strength that processes screw thread like this reduces, and influences the construction quality.For addressing this problem, the people is arranged before machining screw, it is thick that steel bar end is carried out pier, and then machining screw.The inventor thinks, no matter handle the early stage that above-mentioned two kinds of methods are taked how all to keep away before the unavoidable machining screw, in economically, undesirable on the process velocity.And still promptly do not process at present the easy method that does not reduce reinforced steel bar strength.

The purpose of this utility model just provides a kind of can the work reinforcing bar under the preceding topic of handling any early stage the end reinforced rigid externally threaded screw-rolling machine central module Thread rolling head that is squeezed into.

The utility model is following realization; Thread rolling head mainly is made up of roller, drive end bearing bracket, rear end cap, roller pin, roller shaft, turning rolls, knife rest; Wherein: be cylindric knife rest and between drive end bearing bracket and rear end cap, also be fastenedly connected with it, roller links together by roller shaft and turning rolls, three turning rolls are 120 ° mutually and link to each other with knife rest by roller pin respectively, turning rolls can rotate around roller pin, for prevent that turning rolls from rotating when working, use bolting between knife rest and the turning rolls, the roller periphery is a hobboing cutter, and rear end cap connects with outer power.The hobboing cutter external diameter forms the round screw thread steel root to be processed footpath that is on three rollers.In use, outer power makes the Thread rolling head rotation by rear end cap, reinforcing bar penetrates from the drive end bearing bracket center and touches three rollers, slightly the application of force makes three pair of rollers steel bars, after the sub-fraction to be extruded, be meshing with each other, pushed by the screw thread that is extruded on hobboing cutter on the roller and the reinforcing bar, the rotation of Thread rolling head will drive the reinforcing bar radial feed, treat that power reverse can be withdrawed from reinforcing bar with after the end reinforced completion of processing.

Use this novel Thread rolling head to carry out thread-rolling screw as reinforcing bar, reinforcing bar is not by any cutting, core diameter of thread can be less than the parent material of reinforcement rebar diameter, can be equal to or greater than the mother metal diameter on the contrary, therefore after connecting with screw element, connect part intensity and equal or exceed strength of parent, service property (quality) can guarantee.Reinforcing bar need not done any early stage and handle before thread-rolling screw, the time processing moulding saves time, cost saving.Adjust knife rest as required and turn to, can push right-hand thread, also can push left-hand thread.

The utility model is described in further detail below in conjunction with embodiment:

Fig. 1 is the utility model front view;

Wherein: 1, drive end bearing bracket; 2, drain goes out groove; 3, adjusting pad; 4, turning rolls; 5, roller pin; 6, roller; 7, knife rest; 8, pad; 9, roller shaft; 10, adapter sleeve; 11, drain is gone into groove; 12, rear end cap;

Fig. 2 is the utility model left view; Wherein: 13, reinforcing bar to be processed; 14, bolt; 15, needle roller;

Fig. 3 is the utility model partial view; Wherein: 16, turning rolls set bolt; 17, Long Circle bolt hole;

As shown in Figure 1, Thread rolling head is by roller (6), drive end bearing bracket (1), rear end cap (12), roller pin (5), roller shaft (9), turning rolls (4), knife rest (7), cover (10), some bolts, intake chute (11) compositions such as (2), drive end bearing bracket (1), rear end cap (12) is in the form of annular discs, knife rest (7) also is fastenedly connected with it with bolt (14) between drive end bearing bracket and rear end cap, roller (6) is enclosed within on the roller shaft (9), it is more flexible for roller (6) is rotated, between roller and roller shaft, can be provided with needle roller (15), roller shaft (9) two ends and turning rolls (4) are nested together, turning rolls links to each other with knife rest (7) by roller pin (5) and can rotate around roller pin, and its effect is; When being the steel bars screw thread, need roller deflection certain angle is determined deflection angle according to different bar diameters, different lead angle because lead angle is arranged, use bolt (16) fixed idler whell frame at last, so the knife rest upper bolt hole is Long Circle (17), for adjusting the turning rolls angle.Roller can be set to more than three or three, and the roller that one of the utility model characteristics be exactly to be provided with is three, and it is strong and can be reinforcing bar processing than minor diameter to push reinforcing bar like this.The roller periphery is a hobboing cutter, and rear end cap connects with outer power by its outside adapter sleeve (10), is furnished with drain and goes into groove (11) on adapter sleeve, is provided with drain and goes out groove (12) on drive end bearing bracket, lubricated, cooling effect when playing thread-rolling screw.For processing different-diameter reinforcing bar, between turning rolls and knife rest, can be provided with adjusting pad, by the thickness of transposing adjusting pad, determine three diameter of a circles that roller surrounds, the hobboing cutter external diameter forms round reinforcing bar to be processed (13) core diameter of thread that is on three rollers.In order to make reinforcing bar enter the hobboing cutter crush-zone smoothly, the importing angle of hobboing cutter front end is 5 °-8 °.This Thread rolling head has been arranged, adding existing power-equipment can be convenient, fast, one-shot forming ground is for the reinforcing bar machining screw handled without any early stage, and it is that cylindrical, near cylindrical metal carries out machining screw that this Thread rolling head also can be other similar reinforcing bar shape or cross section.

Claims

1. Thread rolling head that is used for thread-rolling screw, it is characterized in that: Thread rolling head mainly is made up of roller (6), drive end bearing bracket (1), rear end cap (12), roller pin (5), roller shaft (9), turning rolls (4), knife rest (7); Wherein: be cylindric knife rest (7) and be positioned between drive end bearing bracket (1) and the rear end cap (12) and be fastenedly connected with it, roller (6) links together by roller shaft (9) and turning rolls (4), use bolting between knife rest (7) and the turning rolls (4), roller (6) periphery is a hobboing cutter, and rear end cap connects with outer power.

2. according to the described Thread rolling head of claim 1, it is characterized in that: between turning rolls (4) and knife rest (7), can be provided with adjusting pad (3).

3. according to the described Thread rolling head of claim 1, it is characterized in that: the importing angle of hobboing cutter front end is 5 °-8 °.

4. according to the described Thread rolling head of claim 1, it is characterized in that: three turning rolls are 120 ° mutually and link to each other with knife rest by roller pin, and the hobboing cutter external diameter forms circle and is screw thread steel root to be processed footpath on three rollers.